FR2495118A1 - CURVE ROUTING DEVICE OF LONG OBJECTS - Google Patents

Abstract

The subject of the invention is a device for conveying elongated objects D in a curve between two straight corridors, upstream 1 and downstream 3, connected by a curved connecting corridor, each corridor consisting of two pairs of parallel guides 11, 12 , 31, 32 between which the objects D are conveyed by successive movements by means of two series 13, 14, 33, 34 of trays with cells. According to the invention, the internal guides 22 of the curved corridor 2 are associated with a series 24 of trays with cells wedged on shafts normal to the curve, angularly offset and driven in synchronism with the plates 14 and 34 of the straight corridors 1 and 3 to a speed determining a constant angular speed of change of orientation of the objects and the external guides 21 are associated on the one hand, in the central part A of the curve, with a series 23 of plates with nested cells whose axes are normal to the curve, angularly offset and driven in rotation in synchronism at a determining speed along the outer guide 21, a tangential speed corresponding to the constant angular speed of change of orientation and, on the other hand, in the upstream B1 and downstream B2 parts of the curve, with two variable speed drive devices 4 and 5 determining along the outer guide 21 respectively in the upstream part B1 a tangential speed cross health of the linear speed of the upstream corridor 1 to the tangential speed of the curved corridor 3 and in the downstream part B2 a decreasing tangential speed from the tangential speed of the curved corridor 2 to the linear speed of the downstream corridor 3. The invention applies especially for the delivery of ammunition in an artillery turret. (CF DRAWING IN BOPI)

Description

The invention relates to a conveying device in curve

  of objects lying between two straight corridors and applies especially

  the delivery of ammunition for the supply of a cannon.

  In artillery turrets ammunition is transported from the cargo bay to the tube by a series of straight or curved corridors. Each straight corridor is bounded by two pairs of parallel guides, the guides of each pair being spaced apart by a substantially equal distance

to the width of the ammunition.

  Thus, the ammunition is always guided in two points, on the one hand

  near the socket plate and on the other hand near the

  ge. The two guides are respectively associated with two series of nested cell trays wedged on shafts perpendicular to the guides and rotated in synchronism at a speed determining a constant linear velocity of movement of the munition within the corridor. For this purpose, each plate generally has several cells, for example four, which thus give it the shape of a Maltese cross. During the rotation of the plateau, the ammunition is supported within the cell, which advances it and pushes it to the next plateau. The branches of the Maltese cross are obviously profiled to take care of and repel ammunition smoothly. At the exit of the hold, the munitions move one behind the other in a vertical direction and introduce them into a

  fixed corridor in which they move parallel to themselves.

  It is useful to bring them back to the horizontal and that is why the fixed corridor consists of two straight corridors, one horizontal and the other vertical connected by a circular corridor in which the ammunition changes.

progressively of orientation.

  The circular corridor is limited, like the right corridor, by two pairs of guides ensuring continuity with the upstream corridor and the corridor

  downstream respectively of the inner side and the outer side of the curve.

  Of course, we take into account the shape of the ammunition to facilitate its passage in curve and that is why, normally, the inner side

  is that of crimping and the outer side to that of the socket plate.

2 24951 13

  If the upstream and downstream straight corridors are equipped, as has been indicated, with interlocking nested trays synchronously, the same devices obviously can not be used in the same way to achieve the displacement inside the curved corridor , the ammunition no longer moving parallel to itself but on the contrary around the

  center of the curved corridor, this one being generally circular.

  The invention relates to a device for smooth and gradual delivery of the ammunition inside the curved corridor

  in phase with the upstream corridor and the downstream corridor.

  According to the invention, the inner guides of the curved corridor are associated with a series of trays with cells wedged on trees

  normal to the curve and angularly offset, said trays being

  synchronous with the trays of the straight corridors at a speed determining a constant angular speed of change of orientation of the ammunition, and the outer guides are associated on the one hand, in the central part of the curve, with a series of trays to nested cells whose axes are normal to the curve and angularly offset, said

  trays being rotated in synchronism at a determined speed.

  along the outer guide, a tangential velocity corresponding to the constant angular rate of change of orientation, and secondly, in the upstream and downstream portions of the curve, to two variable speed drive devices determining the along the outer guide, respectively, in the upstream part, an increasing tangential velocity passing from the linear velocity of the upstream corridor to the tangential velocity

  of the curved corridor and in the downstream part, a tangential speed decreases

  passing from the tangential speed of the corridor curve to the speed

linear of the downstream corridor.

  In a preferred embodiment, each of the variable speed drive devices is constituted by a screw comprising a helicoidal thread variable pitch slightly wider than the objects, the screw being oriented and placed at a level such that the plane passing through an inner guide and an outside guide of the curve is tangent to the bottom of the net and at the point of tangency the median plane of the net

be normal to the guide.

  The pitch of the thread of the upstream screw varies so as to determine, as a function of the variation of the radius of the curve along the screw, at the upstream end a speed of displacement increasing from the linear speed in the upstream corridor until at a speed greater than the tangential velocity corresponding to the constant angular velocity, and at the downstream end, a velocity decreasing to the tangential velocity

  in the curved corridor. The pitch of the thread of the downstream screw varies inversely

  from the tangential speed in the curved corridor up to the speed

linear in the downstream corridor.

  The invention will now be described, with reference to a particular embodiment, given by way of example and represented on the

attached drawings.

  Figure 1 is a schematic elevational view of the device

  Curve routing according to the invention.

  Figure 2 and Figure 3 are scale detail views

  magnification of a variable speed displacement screw occupying two posi-

successive statements.

  Figure 4 is a velocity diagram along the axis of the screw. FIG. 1 diagrammatically shows a straight corridor

  upstream 1 connected by a curved corridor 2 to a straight downstream corridor 3.

  The ammunition is brought from the bunker by an unrepresented access well in which they move vertically one behind the other, and they are introduced one beside the other in the upstream corridor (1 ) inside which they move parallel to themselves. For this purpose, they are guided by two pairs of parallel guides 11 and 12 placed respectively of the sleeve tray caté

  and the crimping side, the sleeve being normally at the lower part

  and the projectile at the top.

  The movement of ammunition parallel to itself is

  determined by two series 13, 14 of associated cell trays respectively.

to guides 11 and 12.

  These provisions being perfectly known, they have not been

  represented only very schematically in the figure.

  In the same way downstream corridor 3, inside which the ammunition moves parallel to their horizontal axis, consists essentially of two pairs of guides 31, 32 associated with two series

trays 33, 34.

  In the right lanes 1 and 3, the two series of trays are synchronously driven so as to cause the displacement of

  ammunition parallel to itself and at the same linear velocity proportional

  tional to the speed of rotation of the trays.

  When these have, as usual, four cells,

  they rotate 3/4 of a turn per cycle.

24951 118

  The curved corridor 2 which provides the connection between the straight corridors 1 and 3 is limited by two pairs of curved guides 21, 22 connecting tangentially to the rectilinear guides 11 and 11 respectively.

  12 on the upstream side and 31, 32 on the downstream side.

  Normally, the curved corridor 2 has a circular shape, the

  21, 22 being centered at a point (0) located near the end

  the projectile (P). Indeed, the shaped shape of the shell facilitates

the rotation around this point.

  In the upstream and downstream corridors, the munition moves linearly

  distance (e) to each third of the cycle. According to one characteristic of the invention, the inner guides 22 are associated with a series of cell trays 24 which are regularly angularly offset so that their axes pass through the point (0) and are therefore normal to the guide 22 and that the crescents trays are in other staggered

  angularly of an arc of a circle of length substantially equal to (e).

  On the other hand, the center (0) of the curved corridor (1) is preferably placed at a distance (a) from the axes of the last plateau 140 of the upstream corridor and the first plateau 340 of the downstream corridor, the distance (a) corresponding at the position where the immunity is disengaged from the trays 140 and 132. Thus the upstream 1 and downstream 3 corridors are extended by the distance (a) beyond the axis of their

extreme trays.

  The inner plates 24 of the curved corridor are driven in synchronism with the plates 14 and 34 of the straight corridors and it can be seen that, thanks to all the provisions adopted, the ammunition can be routed progressively and smoothly from the corridor 1 and corridor 3,

  at least on the inside, that is to say on the crimping side.

  Of course, the same provision can not be adopted on the side of the outside guides 21 since the ammunition must travel a distance

bigger at the same time.

  According to a second characteristic of the invention, the corridor

  curve is divided for this purpose into three parts.

  In the central portion A, the change of orientation of the ammunition is ensured with a constant angular velocity. This angular velocity is that which is determined by the plates 24 rotating in synchronism with the plates 14 and 34, that is to say 3/4 of a turn per cycle. The movement of the ammunition of the bushing side is thus ensured by a series of cell trays 23 which must be driven in rotation at a speed ensuring the tangential velocity corresponding to the constant angular velocity sought and which consequently depends on the radius of

  the curve at the height of the trays.

  In the same way as the plates 24 associated with the inner guides 22, the plates 23 are offset angularly so that their axes pass through the center (0) of the curve and that they are

therefore normal to guides 21.

  Preferably the trays will be arranged on either side of an average line 25 having a double radius of the average line 26 of the

  24. Thus, the tangential velocity along the trays will be

  it doubles the tangential velocity along the line 26 which is itself equal to the linear speed of displacement in the corridors 1 and 3. The trays 23 may have a shape identical to that of the trays 24 and will be in double number that of the trays 24 corresponding to the rmme angular sector. Thus, the series of trays with

  23 will comprise, on the one hand, trays 231 coaxiauvxeúles pla-

  24 and on the other hand trays 232 whose axes will be

  directed along the bisectors of the angles formed by the axes of the

24.

  The length of the mean arc 25 being twice that of the arc 26, the plates 23 will be rotated synchronously

  rotate 1.5 turns per cycle to determine the desired augular speed.

  Thanks to the arrangement just described, we will ensure a gradual and smooth change of orientation of the ammunition in

the central part A of the curve.

  However, in the extreme parts B1 and B2 of the curve,

  on both sides of Part A, it will be necessary to ensure the

  ammunition of the caté socket at an increasing speed in the

  B1 and decreasing in B2.

  Indeed, in the portion B1, the end of the bushing side which was driven by the trays 13 at a constant linear speed causing it to travel the distance (e) to each third of the cycle will have to pass at a double tangent velocity caused by the trays. 25. Similarly, in / part B2, the tangential velocity of the shell

  should gradually decrease to a linear velocity

  undermined by the trays 33 of the corridor 3.

  The connection between the trays 13 of the upstream corridor and the

  of Part A must therefore be provided by a device

  both to gradually accelerate the socket end of the ammunition, and

  conversely to decelerate between part A and downstream corridor 3.

  One could imagine various more or less complicated devices to support the ammunition in parts BI and B2 and give it

  a uniformly accelerated or decelerated movement. However, in a

  of this kind, it is advantageous to use purely mechanical organs

  to this end, according to a preferred feature of the invention.

  Variable screw screws 4 and 5 are shown schematically

in Figure 1.

  The use of a variable pitch makes it possible to ensure very simply the desired acceleration. On the other hand, it is possible, as has been shown to give each screw a net width (1) slightly greater than the width of the sleeves D and to orient the screw so that on the one hand, the bottom of the net is substantially tangent to the plane passing through the two guides 11 and 12, along which the munitiorns move and that on the other hand, at the point of tangency, the median plane of the net passes

  substantially by the center (O) of the curve.

  FIG. 1 shows that this condition can be achieved if the screws 4 and 5 are oriented so that their axes are inclined with respect to the axes of the corridors 1 and 3 and substantially perpendicular to the axes of the plates of the series 24 placed to. ends of the sector A. The upstream screw 4 has been shown on an enlarged scale in FIGS. 2 and 3 which are longitudinal sections along the axis of the screw and on which is shown in phantom the first plate 232 of the

series 23.

  The pitch of the screw is calculated so that the displacement of the munition is in phase at the entrance and exit of the screw with the adjacent plates and iTje the acceleration and deceleratior of the movement have acceptable finite values. In order to obtain the desired orientation, this must be done in the future. u if lieon dragged the screw. example of a speed of rotation of Lzois tours by * cyc lf We see example on

  the fiafs 2 - uetu x successive positioens Me the screw and the flat 2_-

  after a quarter of a turn of the screw to the end and a rotation of 1 ton of dou'r of the plate 232 and / 16 of the last su-su

water 132 from Ibe i3.

  In Figure 2, Figure 2, the Duni-ion Di yes ziaen cta or-

  It is necessary to be aware of the fact that it will be necessary to be in charge of the nineteenth year. - Y. plateau 932 erenreu 2a

  Charge the equipped D2 fl ight = back to the end of 72 screws.

  In the position of FIG. 3, the munition D1 is pushed only once.

  by the thread 41 of the screw 4 while the munition D2 has left the screw

  and is pushed along the guides 22 by the plate 232.

  FIG. 4 represents the diagram of the linear velocities along the axis of the screw, the time being indicated on the abscissa and the speed on the ordinate. The support by the screw 4 begins substantially at the height of the axis of the last plateau 132 of the corridor 1. However, as indicated, the corridor is extended beyond this axis by a distance (a ). It is therefore at this point that corresponds to the point-A of the visque the speed of movement of the munition (equal to the linear velocity Vi in the corridor 1) should pass abruptly to the tangential velocity V2 which corresponds, according to the radius OA of the curve, at the constant angular velocity correpondant it migrates along the inner line 26 at the speed VI. So we have V2 = V1. OA / r, (r) being the radius of the center line

26 of the series of trays 24.

  At point B of the screw from which the ammunition is supported

  by the first plateau 232 of the series 23, the linear velocity of

should be V3 = V1. OB / r.

  To avoid the abrupt change of speed from V1 to V2, the munition is taken over by the screw from a point C situated upstream of A. The pitch is determined so that the speed increases gradually until a value V4 which is maintained in the central part of the screw, between the points D and E, the linear speed decreasing progressively from V4 to V3 between the points E and B. For the displacement of the screw is carried out at a speed angular constant, that is to say that the rear part of the munition moves from the arc B1 it is necessary that the area of the polygon C, c, d, e, bB is equal to the area of the polygon c, c, AATB, B. For that, point C must be

  located upstream of point A and that the speed V4 is greater than V2.

  Of course, we can vary the length of the horizontal segment

  DE corresponding to the movement at constant speed V4.

  We thus have a means of determination by calculation of the step to be given

  to the screw given the orientation given to its axis.

  The screw 5 reverses the passage of the tangential speed.

  It has a symmetrical profile to that of the screw 4. Furthermore, as shown in FIG. 1, the screws 4 and 5 can be placed on one side or on the other. the other of the median plane of the corridor, as well as the trays with cells since their

  The role is to drag ammunition along the corridor.

  In general, the arrangement of the screws and their method of

  will be studied according to the possibilities of

  different mechanical parts that one wishes to use.

  On the other hand, it is envisaged that, if the use of variable pitch screws is advantageous, other devices, controlled for example by cams, could be used, to go from the right corridor to the central part.

of the curved corridor and vice versa.

  Moreover, in general, the invention is not limited to the details of the embodiment which has been described, although variants may

to be imagined.

Claims (2)

  1. Device for conveying curves of elongated objects (D)   between two straight lanes, respectively upstream 1 and downstream 3,   different connections, connected by a curved connecting corridor, each   right loir 1, 3 being constituted by two pairs of parallel guides 11, 12 31, 32 between which are conveyed the objects (D) by successive displacement   two series 13, 14, 33, 34 of interlocking cell trays.   staked on trees perpendicular to the guides and driven in rota-   tion in 5yt; ch-ronism at a second speed a linear velocity constituting   aunt of moving objects, the curved connecting passage 2 being limited   two pairs of guides 21, 22 ensuring the continuity of the guiding of the neck.   1 upstream downstream lane 3 respectively of inner and outer side to the curve, characterized in that the inner guides 22 of the curved lane 2 are associated with a series 24 of trays with wedges wedged on trees nornrax 5to the curve and angular decals said plateaux 24 being interwoven in svynt-: lrnisme with the trays 14 and 34 of   straight corridors 1 and 3 at a speed determining a constant angular velocity   : ante de ciangemnent uriaetacion de. oI; [b] and that the outer guides 2lll have been associated in part, in the central part (A) of the couribe, a serie 23 of alveo.es 4belts dices sleeves the axes are nr.or The said plates 23 are rotated in synchronism at a predetermined speed along the outer guide 21, a tangential speed corresponding to the angular velocity constancy. The directional orientation of each side, in the parts of the eOuture, at the same time,   at variable speed 4 and S3 continue along the dt. guie e.   the speed of the velocity of the velocity of the velocity of the neck, the velocity, the velocity of the co ', To bend the curve, take a tangent velocity in the part (B2), and cut it out of the face of the curve. ouloir downstream 3.   2, Device of Payment according to the ReverndicatiOn 1: carac-   characterized by the fact that each device dientralise at speed I., 5 41   variable is constituted by a screw / comprising a f.ler iél.i.coldallà not (q variable of, légèrecent argie superior eeie ohbjets, the screw being oriented and place a level such that the plane passing through an inner guidezl 1o .r ............ i: c - __ ,: i-'W d..JU: i. o-   L, Disr-ositif. ## STR1 ## i o_ -Zi-3> g'r:.: -a t l. : zO: -. e: '_ <_: -. Eiet o ': -a' - '_n: o - _ t 3   L ^ ss ;. ue] i x .......... tfi e pam.! '_: t, - - - ge .................... es = - jnr <- - p .. - r-he -a-c-32; t b c1.C --- R - c "! {. S   '' 'o' ': e_: he-. 'a _ = -: -; em _ avscn-. ". u: and v.'lesse>!: =' - -: -.   t - 2 e -} l e - t -! - "s, -:. s t:.: .- ':' a -? .-- 'a {i se: ts in'veFsa -; a Pt ## EQU1 ## not -   and 'i tis; - 5. . '-. 't s; XiI d- -.e -... ..: -: .. CLMF: